Improvement in ventilators for buildings



NTED vSTATES PATENT GFFIGE.-

GEORGE R. BARKER, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN VENTILAToRs FoR Buunmes'.-

Specification forming part of Letters Patent NOILILSGS, dated Octobir21, 1873; applicatirn filed A v August 2, 1873.

.To 'all whom it may concern:

Be it known that I, GEORGE B.' BAR'KER, of the city of Philadelphia andState of Pennsylvania, have invented an Improvement in Ventilators forBuildings, of which the following is a specification: r

My invention relates to the improved ventilator for which Letters PatentNo. 111,718 were granted to me dated February 14, 1871, and consists inthe mode of constructing and applying the `same to the iioor of abuilding, so that while the hot fresh air is passingup through the floorthe contaminated or vitiated air will flow down through adjustableopenings immediately around the central openings for the hot fresh air,into a suitable conduit-pipe leading to' the chimney or other flue belowthe floor,- the object being to afford a more perfect ventilation ofchurches and other assembly buildings, which receive the hot airdirectly through the iloor of the same.

Figure 1 is a central vertical section of a floor-ventilator embodyingmy invention. Fig. 2 is a plan view of the upper side of the iioorplatesof the said improved ventilator; and Fig. 3 is a like view of the underside of said floor-plates. Fig. 4 isa top view of the said ventilatorhaving the said floor-plates removed, in order to expose theinterior'construction and arrangement of the parts whereby the hot freshair is conducted upward through the oo, and the vitiated air conducteddown through the floor to the escape-pipeleading `along under the floorto the chimney, not shown.

The hot air of the furnace, usuallylocated in the basement or cellarofthe building, passes up through the usual hot-air iiue A, whichreaches nearly up to the upper side of the tloor,

' indicated by the dotted lines o w in Fig. 1. The upper part of thehot-air flue A is sur-o rounded by a casing, b', which reaches from alittle below the upper surface of the iioor o w downward about eighteeninches, more or less, to its bottom plate b, which fits air-tight aroundagainst the outside of the hot-air iiue A, and leaves an annular space,B, for the downward passage of the vitiated air to the conduit-pipe b,which extends along under `the licor o w to the usual chimney of thefurnace or other escape iue. In one side of the hot-air ilue A there isan opening tted with a small pipe, C, which extends ash ort distance,concentrically, through the vitiated-air liue or conduit-pipe b, and isfitted with a stop-valve, c', whereby the hot air may be turned into thevitiated-air flue bf, when it becomes desirable to shut off the hot airfrom the room above the iloor c w. The top or floor plates consist ofthree distinct parts, D d d. The top plate D extends overthe whole areaof the opening in the loor o w, and has a flange, 1, which iits wi hinthe mouth of the foul or vitiated air,

pin in D, so as to open and close sectoral openings in the upper plate'D, and thus serving as a register-plate for the hot-air ilue A, the saidregistering-plate d having sectoral openings and blank spaces tocorrespond with those of the top plate D 5 and the outer plate, d',being annular, turns, in like manner, between the ilanges 1 and-2, so asto open and close sectoral openings in the plate D, and thus serving asa register-plate for the vitiated-air lue B, the said registering-plated having sectoral openings and blank spaces to correspond with thoseabove them in the top plate D. The said registering-plates d", and d aresupported at their-outer edges by means of small brackets 3 3 3, whichare fixed to the flanges 1 and 2, respectively; and the requiredmovements of the said registering-plates d and d are eifected by meansof short studs 4 4, one in each plate, which extend up to the topsurface of plate D through one of the openings for the same in theappropriate series. Directly above the mouth of the vitiated-air line 11there is a deiiect-ing-plate, E, which supports the stem c of the valveo in the pipe (l in a vertical position, and so as to be accessiblethrough the opening above it in the top plate D, for the purpose ofopening and closing the valve, as occasion may require, as will bedescribed.

In the operation of the said improved iloorventilator, when both seriesof openings in the plates D d d" are uncovered by the appropriatemovements of the registering-plates d d, thehot air passes upward in theusual manner from the furnace (not shown) through the inner series ofopenings into the room of the building, the valve c being closed; andthe vitiated air, being heavier, gradually sinks to the ioor and flowsalong to and enters through the outer series of openings into theannular space Which is between A and b', and passes out through the pipeb to the furnace-chimney, or to a ventilating iiue or shaft; and shouldthe room become too Warm, all that is necessary to reduce thetemperature is to open the valve c and close the central or hot airregister-openings, and thus turn all the hot-air into the pipe Theopenings around the series of closed central openings remaining open forthe entrance of the said vitiated air, and the heating of the ue b bythe introduction of the hot air into it through the valvetube, greatlyincrease the iloW of the vitiated air out of the IOOIU.

If an elevated entablatiue or guard-screen be desired, the same can bereadily applied, as indicated by the dotted lines x w y, either voverthe hotair openings or over both series,

the tWo currents of air, in the latter case, passf ing through sideopenings in the entablature, provided at the iloor, for the heavy orvitiated air, and above the same for the hot air, the two beingseparated by a close partition.

One advantage afforded by my invention is that the vitiated air can beperfectly carried oft' by the single pipe 11 to the ehimneyorVentilating shaft, and thereby the cost of numerous pipes andregister-plates for the purpose, as generally required7 is avoided.Another advantage attainable is that my invention can be readily appliedto the floor-ventilators in use at a very small cost.

I claim as my invention- In combination with the hot-air iiue A and itsVentilating-plate D `and register-plate d the surrounding vitiated-airchamber B an exit-pipe b', and the surrounding series of openings in theiioor-plate With their annular register-plate d', the' said parts beingconstructed to operate substantially as and for the purpose set forth. f

GEORGE R. BARKER.

Witnesses BENJ. Monrson, WM. H. MoRIsoN.

